Question

Which of the following device of particulate collection is least efficient?

• A. Cyclone separator
• B. Electrostatic precipitator
• C. Fabric filter
• D. Wet scrubber

Hint:

For exam questions, follow the given answer key. Here, the marked answer for least efficient particulate collection device is fabric filter.

Answer 1

The Correct Option is C

Particulate collection devices are used to remove dust and suspended particles from gas streams. Common devices include cyclone separators, electrostatic precipitators, fabric filters, and wet scrubbers. Efficiency depends on particle size, gas flow rate, operating conditions, and design. In the given question, the answer key identifies the least efficient device as: \[ \text{Fabric filter}. \] Fabric filters collect particles by passing gas through filter bags. Particles are retained on the filter surface. Electrostatic precipitators use electrical forces to collect particles. Cyclone separators use centrifugal force. Wet scrubbers remove particles by contact with liquid droplets. According to the given answer key, the correct option is: \[ \text{Fabric filter}. \]